Gurobi 5.0.1 (linux64) logging started Sat Nov 17 11:28:50 2012 Optimize a model with 82583 rows, 61752 columns and 308262 nonzeros Presolve removed 1998 rows and 3472 columns (presolve time = 5s) ... Presolve removed 2000 rows and 3474 columns Presolve time: 7.77s Presolved: 80583 rows, 58278 columns, 299180 nonzeros Variable types: 0 continuous, 58278 integer (58278 binary) Found heuristic solution: objective 248.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 43235 2.9745075e+00 4.228205e+01 0.000000e+00 5s 53032 3.0001674e+00 5.489959e+02 0.000000e+00 10s 55462 3.0001759e+00 6.527379e+01 0.000000e+00 15s 57568 3.0001791e+00 5.083140e+02 0.000000e+00 20s 59674 3.0001819e+00 8.506924e+01 0.000000e+00 25s 61942 3.0001847e+00 9.080215e+01 0.000000e+00 30s 64048 3.0001868e+00 1.720324e+02 0.000000e+00 35s 66154 3.0001891e+00 5.906655e+01 0.000000e+00 40s 68422 3.0001920e+00 6.364364e+02 0.000000e+00 45s 70204 3.0001934e+00 3.127260e+01 0.000000e+00 50s 72148 3.0001946e+00 1.884304e+02 0.000000e+00 55s 74092 3.0001962e+00 9.943359e+00 0.000000e+00 60s 76198 3.0001982e+00 6.410829e+02 0.000000e+00 65s 78142 3.0001999e+00 1.393390e+02 0.000000e+00 70s 80086 3.0002022e+00 8.916474e+01 0.000000e+00 75s 82192 3.0002051e+00 1.899232e+02 0.000000e+00 80s 84136 3.0002071e+00 2.720790e+01 0.000000e+00 85s 86080 3.0002090e+00 1.485750e+03 0.000000e+00 90s 88024 3.0002111e+00 4.687576e+01 0.000000e+00 95s 89968 3.0002126e+00 1.565588e+02 0.000000e+00 100s 91750 3.0002138e+00 5.221088e+00 0.000000e+00 105s 93532 3.0002152e+00 8.940472e+00 0.000000e+00 110s 95638 3.0002192e+00 4.809428e+02 0.000000e+00 115s 97582 3.0002197e+00 3.702035e-01 0.000000e+00 120s 97650 3.0000000e+00 0.000000e+00 0.000000e+00 121s Root relaxation: objective 3.000000e+00, 97650 iterations, 120.58 seconds Total elapsed time = 185.76s Total elapsed time = 193.11s Total elapsed time = 195.78s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 200s Explored 0 nodes (233144 simplex iterations) in 200.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%